RFR: 7106: Update to the release splash screen for JMC 8 [v2]

[Marcus Hirt]

> Splash with updated copyright year and "Early Access" removed.

Marcus Hirt has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR.

-------------

Changes:
  - all: https://git.openjdk.java.net/jmc/pull/203/files
  - new: https://git.openjdk.java.net/jmc/pull/203/files/d9f29f35..50d81c92

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jmc&pr=203&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jmc&pr=203&range=00-01

  Stats: 0 lines in 1 file changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jmc/pull/203.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/203/head:pull/203

PR: https://git.openjdk.java.net/jmc/pull/203